Bluefin tuna threatened with extinction in the Mediterranean

Overfishing again singled out; Mediterranean bluefin tuna is in danger of extinction, according to the International Commission for the Conservation of Atlantic Tunas (Iccat).

And the report is alarming: In 2007, fishing quotas for this very common fish species on our plates were set at 29,500 tonnes, out of which almost 61,000 tonnes of bluefin tuna were caught and it could now disappear from the Mediterranean Sea, as is already the case in the West Atlantic.

The commission proposes to halt this phenomenon of drastically reducing quotas to 15,000 tonnes per year, and to strengthen controls, while IUCN and WWF are calling for a firm suspension of fishing for this fish.

Anyway, it is urgent to act if we do not want to see this species disappear from our shores, and in my opinion, the respect of fishing quotas is a priority to keep: Because after all, overfishing will it not lead to the loss of tuna boats in the medium to long term? In short, again, we shoot ourselves in the foot …

Aquamag, the “other” aquarist magazine

Along with the release of Aquatic magazine, another magazine about our passion for the aquarium is on the starting block to succeed the deceased Aqua pleasure. Publication of the number 1 this month of December 2008.

Already, a significant difference between the two magazines: Aquatic magazine is only available in high resolution downloadable electronic version, while Aquamag is offered in traditional paper form, but only by correspondence and in some outlets. This point is important to me, indeed, nothing replaces the touch of glossy paper, and I find it much more convenient to find references and information when you have your hands in the aquarium (case lived :)) .

For the moment, I only had access to the cover, some plates of the model in photo, as well as the summary, available on the blog of the magazine, this one is promising, so I “jumped the pace “and ordered the first issue (6,90 €)!

I’ll let you know in a next post my impressions of this new magazine, anyway, let’s wish him out of a long life!

More birth …

It’s weird, since I moved the decor of my aquarium a few months ago, I have no more birth of Neolamprologus multifasciatus, or more exactly, it’s been a few weeks since I do not see more fry in the large shell field to the left of the tank, whereas before, they swarmed.

Of course, I immediately thought of a physiological change in water, but that is not the case. In fact, I see several possible tracks: Either, as I gathered the two shell fields in one, it upset the hierarchical order among the fish, and suddenly, 2 males for a field, although vast this is “too much”, as the rock scree is now “unique”, the territory of the “shelled” altolamprologus compressiceps, which now spends most of its time above the shell field, gives it the opportunity to make more catch among the fry.

It is on this last point that I have the most doubt: I can not actually make him establish his own territory with the female, which she herself has not yet integrated the shell that I have isolated at the foot to the right of the petrous zone, far from the multifasciatus. Have you ever seen it (though I replaced the shell with a bigger one, on the advice of a cichlidophile warned forum forum Cichlids?) I do not know. does not seem to be a problem, because the few “clashes” of territory are “normal” and do not incur any injury or trauma, in short, the fish, all species combined, seem to be tolerated wherever they are: Is what normal?

Do you have feedback on this? If so, thank you to share it in the comments of this post, you may be able to help me restore a balance a little more “healthy” among my scales!

Brewing water and touch of green

Not finding enough water mixing in my Tanganyika aquarium, this being important for gas exchange, I decided to add a small brewing pump, acquired during my stay at Truffaut.

This is the Koralia 1 manufacturer Hydor, which receives a lot of favorable reviews on the various aquarium forums that I attend. This small pump, with an advertised capacity of 1500 l / h (for only 4.5 w / h) is of good quality at first sight, and seems solid. While browsing quickly the notice, I found that it is delivered with two small additional parts to possibly mount at the head of pump in order to be able to obtain a “pendular” mixing of the water, a sort of small alternating current of some kind , but I did not install them, thinking this applies more to reef use. Once connected, the flow of water is indeed interesting, for my 180 liter tank, I directed the pumphead towards the surface, and the current thus produced returns towards the entrance of the filter, which is useful for better waste disposal.

Incidentally, I also took the opportunity to buy 3 feet of rooting plants on support: 2 Anubia Congensis and 1 Anubias Lanceolata: This brings a touch of green to the whole, and in addition, I rely on their strong power nitrate absorption to help me lower them. You will find some pictures at the end of the ticket taken at the end of the weekly maintenance of the aquarium.